Exercise training in normobaric hypoxia: is carbonic anhydrase III the best marker of hypoxia?

To the Editor : We read with great interest a series of three articles ([1][1], [4][2], [5][3]) published in the April 2006 issue of the Journal of Applied Physiology examining the effect of exercise training in normobaric hypoxia on aerobic performance capacity, muscular adjustments of selected